MAINTAINING PROTECTIVE SURFACES ON CARBON CATHODES IN ALUMINIUM ELECTROWINNING CELLS - Patent 0843745

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EP 0 843 745 A1

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(43)	Date of publication:
	27.05.1998 Bulletin 1998/22

(21)	Application number: 96924110.0

(22)	Date of filing: 06.08.1996

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International Patent Classification (IPC):

C25C 3/ 06^{( . )}

C25C 3/ 08^{( . )}

(86)	International application number:
	PCT/IB1996/000778

(87)	International publication number:
	WO 1997/006289 (20.02.1997 Gazette 1997/09)

(84)	Designated Contracting States:
	DE ES FR GB IT NL

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Priority:

07.08.1995 US 19950511647

(71)	Applicant: MOLTECH Invent S.A.
	2320 Luxembourg (LU)

(72)	Inventors:
	DE NORA, Vittorio Nassau (BS) DURUZ, Jean-Jacques CH-1204 Geneva (CH)

(74)	Representative: Cronin, Brian Harold John
	c/o MOLTECH S.A. 9, Route de Troinex 1227 Carouge/GE 1227 Carouge/GE (CH)

(54)	MAINTAINING PROTECTIVE SURFACES ON CARBON CATHODES IN ALUMINIUM ELECTROWINNING CELLS